Recent content by xyyy

Is there reference table for the shear capacity for Screw?

I have a light framed wood office building. The floor is two layers of plywood. I specified #8 nails for fastening plywood to wood floor joists. This is the typical way I saw. The contractor suggests using screws in lieu of nails. I did saw the nails popped out from outside deck for another...

I have a light gauge metal stud shear wall with plywood sheathing. The edge is blocked. My question is about the edge blocking. What is the typical detail or construction method for the blocking? I understand a track, or 2x wood can all be used as blocking. But I'd like know the common or...

I saw a common practice: core holes (3" dia. example) in concrete, embedded steel pipe (1.5 dia.) in the hole, and then fill the holes with cement type epoxy. My question is how to analyze this kind of pipe anchorage if there is moment, shear, tension forces at the bottom of pipe? From link...

Dhengr: Yes, the fish on some photos is probably more than 6' long and more than 500 lbs. This fish hoist is about 20 yards away from ocean. All, thank you for your recommendation. I will suggest to replace it.

This is a fish hoist. Please see attached picture. The top cap of main post is rusted away as shown in attached picture. There are some rust areas at the post bottom. The inside condition cannot be seen. I need to evaluate this hoist if it needs to be replaced, repaired, or still okay. The main...

Sundale, I can not agree with you more. I feel frustrated.

just have the post up.

I use woodwork to do the wood design. The cost is $295. I think Enercalc can do it too. You can try the demo version quickly.

My first approach will be check if it is working or not if there is that opening. If that does not work, then will try to retrofit it. maybe increase wall thickness or attach FRP or.... What kind of retrofit method will be depends on what will be inadequate.

Is it a new structure or existing one? Is the door or the opening still needed?

It is shrinkage crack. Something at the corner restrained the concrete shrinkage and caused the crack.

The foot print size is 5 ft x 3.25 ft. The four supports are at the four corners. Thank you.

Also there is other HVAC air handling units (840 lb) and air cooled condensing units (860 lb each) will be supported by slab on grade. Will a 6" thick slab on grade be adequate or is there some reference I can use to do the calculation?

The HVAC air handling unit is supported at four corners. Which impact factor should be used? Below are from ASCE (2) light machinery, shaft- or motor-driven, 20 percent; (3) reciprocating machinery or power-driven units, 50 percent; Thank you!